<template>
  <div>
   <div class="search">
     <input class="search-input" v-model="keyword" type="text" placeholder="输入城市名或拼音">
   </div>
   <div class="search-content" ref="search" v-show="keyword">
     <ul>
      <li class="search-item border-bottom"v-for="item of list" :key="item.id" @click="handleCityClick(item.name)">
        {{item.name}}
      </li>
      <li class="search-item border-bottom" v-show="hasNodata">沒有找到匹配數據</li>
     </ul>
   </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
export default {
  name: "CitySearch",
  props: {
    allCities: Object
  },
  data () {
    return {
      keyword: '',
      list: [],
      timer: null
    }
  },
  computed: {
    hasNodata () {
      return !this.list.length
    }
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = [];
        for (let i in this.allCities) {
          this.allCities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > -1 ||
              value.name.indexOf(this.keyword) > -1) {
              result.push(value);
            }
          })
        }
        this.list = result;
      }, 100)
    }
  },
  methods: {
    handleCityClick (city) {
      this.$store.commit('changeCity', city);
      this.$router.push('/');
    },
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.search);
  }
}
</script>


<style lang="stylus" scoped >
  @import '~styles/varibles.styl'
  .search
    height .72rem
    padding 0 .1rem
    background $bgColor
    .search-input
      box-sizing border-box
      height .62rem
      line-height .62rem
      padding 0 .1rem
      width 100%
      text-align center
      border-radius .06rem
      color #666
  .search-content
    position absolute
    top: 1.58rem
    left 0
    right 0
    bottom 0
    overflow hidden
    background #eee
    z-index 1
    .search-item
      line-height .62rem
      padding-left .2rem
      color #666
      background #fff
</style>
